BR93H76-2C Datasheet, PDF (4/32 Pages) Rohm – Serial EEPROM Series Automotive EEPROM 125 Operation Microwire BUS EEPROM

BR93H76-2C
Serial Input / Output Timing
Datasheet
CS
tCSS
SK
tDIS
DI
DO(READ)
DO(WRITE)
tSKH
tSKL
tDIH
tCSH
tPD0
tPD1
tDF
STATUS VALID
Figure 1. Serial Input / Output Timing Diagram
○Data is taken from DI, in sync with the rise of SK.
○At READ command, data is outputted from DO in sync with the rise of SK.
○After WRITE command input, the status signal of WRITE (READY / BUSY) can be monitored from DO by setting CS to “H”
after tCS, from the fall of CS, and will display a valid status until the next command start bit is inputted. But, if CS is set to
“L”, DO sets to High-Z state.
○To execute a series of commands, CS is set to “L” once after completion of each command for internal circuit reset
Block Diagram
CS
Command decode
Control
SK
Clock generation
DI
Command
register
DO
Dummy bit
Power source voltage detection
Write
prohibition
High voltage occurrence
Address
buffer
Data
register
Address
9bit
decoder
16bit
R/W
amplifier
9bit
16bit
8,192 bit
EEPROM
Figure 2. Block Diagram
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TSZ02201-0R1R0G100040-1-2
19.DEC.2012 Rev.002